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公开(公告)号：US5650779A
公开(公告)日：1997-07-22
申请号：US480860
申请日：1995-06-07
申请人： David Mark Sugden
发明人： David Mark Sugden
摘要： A sensor failure detection circuit for a position encoder, the sensor failure detection circuit receiving from a first set of at least one position sensor position signals which change state at a high resolution and from a second set of at least one position sensor position signals which change state at a lower resolution, the detection circuit monitoring a count for the position signals at the high resolution between states of the position signals at the lower resolution and comparing the count with a predetermined range which represents an expected count for the position signals at the high resolution between the states of the position signals at the lower resolution.
摘要翻译： 一种用于位置编码器的传感器故障检测电路，所述传感器故障检测电路从第一组接收到以高分辨率改变状态的至少一个位置传感器位置信号和从第二组至少一个位置传感器位置信号 以较低分辨率状态，检测电路以较低分辨率监视位置信号状态之间的高分辨率位置信号的计数，并将计数与表示高位置信号的预期计数的预定范围进行比较 位置信号状态之间的分辨率处于较低分辨率。
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公开(公告)号：US5641957A
公开(公告)日：1997-06-24
申请号：US557655
申请日：1995-11-13
申请人： Song Chae
发明人： Song Chae
IPC分类号： G01D5/36 , G01B5/24 , G01B11/26 , G01C9/00 , G01C9/06 , G03B5/04 , G03B21/00 , G03B21/132 , G01D5/34
摘要： An inclination angle sensing apparatus for use in a projector includes a plurality of inclination angle sensing devices, each of the inclination angle sensing devices having a moving member, an elastic means, a rack, an idle gear, a sensor pinion, a pair of fixing members, a circuit substrate and an optical sensing unit. In the inclination angle sensing device, the moving member is coupled to the rack and the sensor pinion is engaged with the rack. The sensor pinion has a reflector consisting of a light transmitting and a light reflecting portions, and the optical sensing unit has a portion for emitting a light beam to the reflector on the sensor pinion and a portion for receiving the light beam therefrom. The optical sensing unit determines the amount of rotation the sensor pinion has undergone by the receiving portion thereof counting the number of times the light beam encounters the light transmitting or the light reflecting slices of the sensor pinions during the rotation.
摘要翻译： 用于投影仪的倾斜角度检测装置包括多个倾斜角度检测装置，每个倾斜角度检测装置具有移动部件，弹性装置，齿条，空转齿轮，传感器小齿轮，一对固定 构件，电路基板和光学感测单元。 在倾斜角度检测装置中，移动构件联接到齿条，并且传感器小齿轮与齿条接合。 传感器小齿轮具有由透光和反光部分组成的反射器，并且光学感测单元具有用于向传感器小齿轮上的反射器发射光束的部分和用于接收光束的部分。 光学传感单元确定传感器小齿轮经受接收部分的旋转量，其计数在旋转期间光束遇到传感器小齿轮的光线的传播次数或光反射切片的次数。
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53.发明授权Position detection system having groups of unique, partially overlapping sequences of scanner readable markings 失效位置检测系统具有独特的，部分重叠的扫描器可读标记序列的组
公开(公告)号：US5576535A
公开(公告)日：1996-11-19
申请号：US356268
申请日：1994-12-15
CPC分类号： G01D5/366 , F15B15/28 , G01D5/2492
摘要： Position detecting system for a body which changes position, comprising a series of markings made at a mutual distance from one another in a scanner unit, which is movable with respect to the series of markings, for scanning the markings, the series of markings or the scanner unit being connected to the body, the markings being made in various groups of a predetermined number of adjacent markings in the series, the markings per group always being made in a sequence such that the sequence belongs to only one group.
摘要翻译： PCT No.PCT / NL93 / 00130 Sec。 371日期1994年12月15日 102（e）日期1994年12月15日PCT提交1993年6月15日PCT公布。 第WO93 / 25865号公报 日期：1993年12月23日用于改变位置的身体的位置检测系统，包括在相对于一系列标记可移动的扫描器单元中彼此相互距离地制成的一系列标记，用于扫描标记， 一系列标记或扫描仪单元连接到身体，标记是以串联的预定数量的相邻标记的各种组制成的，每组的标记总是按照序列制成，使得序列仅属于一个组 。
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公开(公告)号：US5559602A
公开(公告)日：1996-09-24
申请号：US29636
申请日：1993-03-11
申请人： Masaru Nyui
发明人： Masaru Nyui
CPC分类号： G01D5/38
摘要： A rotation measuring apparatus has a grating disposed on a cylindrical surface along the circumferential direction thereof, an illuminating system for applying a light beam to a first location on the grating, light emerging from the first location by the application of the light beam from the illuminating system being incident on a second location on the grating, light beams for detection emerging in a plurality of directions from the second location on which the light is incident, a plurality of light receiving elements for detecting the light beams for detection, respectively, the relative rotation information of the grating and the light receiving elements being measured by the detection by the light receiving elements, and light intercepting means for preventing the light beam for detection which should enter at least one of the light receiving elements from entering a different light receiving element.
摘要翻译： 旋转测量装置具有沿圆周方向设置在圆柱形表面上的光栅，用于将光束施加到光栅上的第一位置的照明系统，通过施加来自照明的光束从第一位置出射的光 系统入射到光栅上的第二位置，用于检测的光束在从光入射的第二位置起的多个方向上出现，多个光接收元件分别用于检测用于检测的光束， 通过光接收元件的检测来测量光栅和受光元件的旋转信息，以及用于防止应进入至少一个光接收元件的光束进入不同光接收元件的遮光装置 。
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公开(公告)号：US5553390A
公开(公告)日：1996-09-10
申请号：US339982
申请日：1994-11-14
申请人： Alfons Ernst , Gunther Nelle
发明人： Alfons Ernst , Gunther Nelle
CPC分类号： B61L25/025 , G01D5/2457 , G01D5/347
摘要： A length measuring system having a scale with a first portion and a second portion separated by a gap, wherein the first and second portions each have incremental graduations. The system further includes a scanner unit for scanning the incremental graduations of the first and second portions, wherein the scanner unit has two groups of scanner elements spaced apart by a greater than the width of the gap. The system has at least one control track parallel to and next to the incremental graduations of the first and second portions. A further scanner element is provided to scan the at least one control track and produce an output signal, wherein the output signal is a function of the absolute position of the first and second portions and controls a switchover from one group of scanner elements to the other group of scanner elements. The absolute position of the first and second portions is derived from the control track over the entire measurement length of the scale and the measurement increment of the control track is greater than the measurement increment of the incremental graduations of the first and second portions.
摘要翻译： 一种长度测量系统，其具有刻度尺，其具有由间隙隔开的第一部分和第二部分，其中所述第一和第二部分各自具有渐变刻度。 该系统还包括用于扫描第一和第二部分的渐变刻度的扫描器单元，其中扫描器单元具有间隔开大于间隙宽度的两组扫描器元件。 该系统具有与第一和第二部分的增量刻度平行并相邻的至少一个控制轨迹。 提供另外的扫描器元件以扫描至少一个控制轨道并产生输出信号，其中输出信号是第一和第二部分的绝对位置的函数，并且控制从一组扫描器元件到另一组的切换 一组扫描仪元件。 第一部分和第二部分的绝对位置在标尺的整个测量长度上从控制轨迹导出，并且控制轨迹的测量增量大于第一和第二部分的渐变刻度的测量增量。
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公开(公告)号：US5539519A
公开(公告)日：1996-07-23
申请号：US928047
申请日：1992-08-11
申请人： Masaaki Takagi , Takumi Fukuda
发明人： Masaaki Takagi , Takumi Fukuda
CPC分类号： G01D5/36 , G01D5/34715
摘要： The optical displacement detecting device utilizes an encoder plate 2 mounted displaceably along a given first plane and having thereon a periodic slit pattern 1. A light source 4 is disposed behind the encoder plate 2 to illuminate the slit pattern 1 to form a primary fringe image 3 shifting along the first plane. A lens member 6 is utilized to project the primary fringe image 3 by a given magnification to form a secondary enlarged fringe image 5 shifting along a given second plane. A light receiving unit 8 is fixed in the secondary plane to optically detect the shifting secondary enlarged fringe image 5 through a periodic mask pattern to thereby output an electric signal 7 indicative of a displacement of the encoder plate 2.
摘要翻译： 光学位移检测装置使用沿着给定的第一平面可移动地安装并具有周期性狭缝图案1的编码器板2.光源4设置在编码器板2的后面以照亮狭缝图案1以形成初级边缘图像3 沿着第一架飞机移动。 透镜构件6用于将原边缘图像3投射给定的倍率，以形成沿着给定的第二平面移动的次级放大的条纹图像5。 光接收单元8固定在二次平面中，以通过周期性掩模图案光学地检测移动二次放大条纹图像5，从而输出指示编码器板2的位移的电信号7。
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57.发明授权Position measuring system with compensation for variable distance between light source and index disk 失效位置测量系统，补偿光源和索引盘之间的可变距离
公开(公告)号：US5493399A
公开(公告)日：1996-02-20
申请号：US275975
申请日：1994-07-15
申请人： Hermann Meyer , Sebastian Brandl
发明人： Hermann Meyer , Sebastian Brandl
CPC分类号： G01D5/34715
摘要： A position measuring system with compensation for variable distance between the light source and the index disk. The index disk has a plurality of index lines separated by masked areas. The light source emits beams of light that impinge upon the plane of the index disk at an angle and yet are parallel to the direction of the index lines. The masked areas on the index disk along with the light source positioned at an angle with respect to the axis of the index disk allow the detectors located downstream of the index disk to be maximally illuminated when the index disk is located at its maximum permissible distance from the light source and the detectors are minimally illuminated when the index disk is located at its minimum permissible distance from the light source.
摘要翻译： 一种位置测量系统，可补偿光源和索引盘之间的距离。 索引盘具有由掩蔽区域分开的多个索引线。 光源以一定角度发射光束，其以折射线的平面方向撞击，并且平行于索引线的方向。 索引盘上的掩蔽区域以及相对于索引盘的轴线定位成一定角度的光源允许当索引盘位于其最大允许距离处时位于索引盘下游的检测器被最大程度地照亮 当索引盘位于距离光源的最小允许距离时，光源和检测器被最小化地照亮。
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58.发明授权Photoelectric encoder having a plane mirror disposed parallel to the optical axis of a concave mirror 失效具有与凹面镜的光轴平行设置的平面镜的光电编码器
公开(公告)号：US5479010A
公开(公告)日：1995-12-26
申请号：US347149
申请日：1994-11-22
CPC分类号： G01D5/34715
摘要： A light emitting device assembled in a light transmitting type of photoelectric encoder is required to generate light having high parallelism and large quantity of light. This device uses one half of a concave mirror having a small aberration and long focal point. Hence, light radiated from a LED disposed at the focal point of the concave mirror has high parallelism. Further, using a plane mirror disposed at the optical axis of a concave mirror, light reflected with the plane mirror from a LED onto the concave mirror travels in parallel rays. Parallel rays, having a large quantity of light resulting from overlapping parallel rays, reflected from the concave mirror directly and indirectly from the light emitting element can be obtained.
摘要翻译： 需要组装在透光型光电编码器中的发光器件来产生具有高平行度和大量光的光。 该装置使用具有小像差和长焦点的凹面镜的一半。 因此，从设置在凹面镜的焦点处的LED发出的光具有高平行度。 此外，使用设置在凹面镜的光轴处的平面镜，由平面镜从LED反射到凹面镜的光以平行射线行进。 可以获得从凹面镜直接和间接地从发光元件反射的具有由重叠的平行光产生的大量光的平行光线。
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公开(公告)号：US5456021A
公开(公告)日：1995-10-10
申请号：US117255
申请日：1993-09-03
申请人： Gunther Nelle , Siebert Holstein
发明人： Gunther Nelle , Siebert Holstein
CPC分类号： G01D5/2497 , H03M1/287
摘要： An apparatus and method for measuring displacement by determining the relative speed between a scale and a scanning plate from reading out a first track twice at different times. From this, correction values for the other tracks are calculated, which represent values from those tracks that would have been read out if all those tracks had been read out at the same time the first track was read out instead of sequentially.
摘要翻译： 一种用于通过在不同时间读出第一轨道两次来确定刻度尺和扫描板之间的相对速度来测量位移的装置和方法。 由此，计算其他轨道的校正值，其代表如果所有这些轨道在第一轨道被读出而不是顺序地同时被读出的那些曲线的那些迹线的值。
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公开(公告)号：US5359193A
公开(公告)日：1994-10-25
申请号：US82301
申请日：1993-06-28
申请人： Masaru Nyui , Masahiko Igaki
发明人： Masaru Nyui , Masahiko Igaki
CPC分类号： G01D5/38
摘要： Disclosed is a Talbot's interference type optical encoder constructed so as to minimize a measurement error due to a signal distortion. A semiconductor laser is installed so that a vertical transverse mode is set in a direction vertical to a moving direction of a diffraction grating serving as a scale. Further, a stop for regulating light beams from a light source is prepared. An aperture of this stop assumes such a configuration that a dimension in a direction along the moving direction of the scale diffraction grating is set equal to or shorter than a dimension in a direction vertical to the moving direction of the scale diffraction grating. Distortions of signals obtained are thereby reduced. A comparison level in signal processing can be centered on an amplitude of the signal, and, as a result, an occurrence of error can be prevented.
摘要翻译： 公开了一种Talbot的干涉型光学编码器，其被构造成使得由于信号失真引起的测量误差最小化。 安装半导体激光器，使得垂直横向模式设置在垂直于用作刻度的衍射光栅的移动方向的方向上。 此外，准备用于调节来自光源的光束的停止。 该止挡件的孔径呈现沿着鳞片衍射光栅的移动方向的方向上的尺寸被设定为等于或短于与鳞片衍射光栅的移动方向垂直的方向的尺寸的构造。 由此获得的信号变形减少。 信号处理中的比较电平可以以信号的幅度为中心，结果可以防止出现错误。
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